{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x18bf623bcf0b60dcff23e1181b9fde5b5ca9038e123300714716d3f8bf9e76fa",
    "signature": "0x0681ec66acf559d8030451df822a56114bc8d8b49492c644ec80bb4a64bdd0521dc48705ee7f31263645459ee2559cf6b97fd91aba54b27854598ba606cf6b391c",
    "signer": "0xfA2000d0d05DaEBDc5cc71819681272c07A88A52",
    "userId": "551154161"
  }
}